根据这段代码帮我写一下OLED运行的流程图#ifndef __OLED_I2C_H
#define __OLED_I2C_H
#include "stm32f10x.h"
#include "SysTick.h"
#define OLED_ADDRESS 0x78 //默认0x78
//定义IIC总线连接的GPIO端口, 用户只需要修改下面代码即可任意改变SCL和SDA的引脚
#define OLED_SCL PBout(6) //SCL引脚
#define OLED_SDA PBout(7) //SDA引脚
#define OLED_SCL_GPIO_PORT GPIOB /* GPIO端口 */
#define OLED_SCL_RCC RCC_APB2Periph_GPIOB /* GPIO端口时钟 */
#define OLED_SCL_PIN GPIO_Pin_6 /* 连接到SCL时钟线的GPIO */
#define OLED_SDA_GPIO_PORT GPIOB /* GPIO端口 */
#define OLED_SDA_RCC RCC_APB2Periph_GPIOB /* GPIO端口时钟 */
#define OLED_SDA_PIN GPIO_Pin_7 /* 连接到SDA数据线的GPIO */
#define OLED_IIC_SDA_READ() GPIO_ReadInputDataBit(OLED_SDA_GPIO_PORT, OLED_SDA_PIN) /* 读SDA口线状态 */
extern unsigned int HZ;
unsigned int GB16_NUM(void);
void OLED_IIC_GPIO_Config(void);
void OLED_IIC_Start(void);
void OLED_IIC_Stop(void);
uint8_t OLED_IIC_WaitAck(void);
void OLED_Write_IIC_Byte(uint8_t _ucByte);
void OLED_Write_IIC_Command(u8 IIC_Command);
void OLED_Fill(u8 fill_Data);
void OLED_Set_Pos(u8 x, u8 y);
void OLED_ON(void);
void OLED_OFF(void);
void OLED_Clear(void);
void OLED_ShowChar(u8 x, u8 y, u8 chr);
void OLED_ShowNum(u8 x, u8 y, u32 num, u8 len,u8 mode);
void OLED_ShowCH(u8 x, u8 y,u8 *chs);
void OLED_Init(void);
void OLED_DrawBMP(u8 x0,u8 y0,u8 x1,u8 y1,u8 BMP[]);
void OLED_ShowStr6x8(char x,char y, char ch[]);
#endif
和#include "OLED_I2C.h"
#include "SysTick.h"
#include "codetab.h"
#include "string.h"
unsigned int HZ=0;
//返回GB16字库里汉字个数
unsigned int GB16_NUM(void)
{
unsigned int HZ_NUM;
unsigned char *PT;
PT = hz_index;
while(*PT++ != '\0')
{
HZ_NUM++;
}
return HZ_NUM/2;
}
void OLED_IIC_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(OLED_SCL_RCC|OLED_SDA_RCC, ENABLE); /* 打开GPIO时钟 */
GPIO_InitStructure.GPIO_Pin = OLED_SCL_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; /* 开漏输出 */
GPIO_Init(OLED_SCL_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = OLED_SDA_PIN;
GPIO_Init(OLED_SDA_GPIO_PORT, &GPIO_InitStructure);
/* 给一个停止信号, 复位IIC总线上的所有设备到待机模式 */
OLED_IIC_Stop();
}
static void OLED_IIC_Delay(void)
{
uint8_t i;
/*
下面的时间是通过逻辑分析仪测试得到的。
工作条件:CPU主频72MHz ,MDK编译环境,1级优化
循环次数为10时,SCL频率 = 205KHz
循环次数为7时,SCL频率 = 347KHz, SCL高电平时间1.5us,SCL低电平时间2.87us
循环次数为5时,SCL频率 = 421KHz, SCL高电平时间1.25us,SCL低电平时间2.375us
*/
for (i = 0; i < 10; i++);
}
/*
*********************************************************************************************************
* 函 数 名: IIC_Start
* 功能说明: CPU发起IIC总线启动信号
* 形 参:无
* 返 回 值: 无
*********************************************************************************************************
*/
void OLED_IIC_Start(void)
{
/* 当SCL高电平时,SDA出现一个下跳沿表示IIC总线启动信号 */
OLED_SDA=1;
OLED_SCL=1;
OLED_IIC_Delay();
OLED_SDA=0;
OLED_IIC_Delay();
OLED_SCL=0;
OLED_IIC_Delay();
}
/*
*********************************************************************************************************
* 函 数 名: IIC_Start
* 功能说明: CPU发起IIC总线停止信号
* 形 参:无
* 返 回 值: 无
*********************************************************************************************************
*/
void OLED_IIC_Stop(void)
{
/* 当SCL高电平时,SDA出现一个上跳沿表示IIC总线停止信号 */
OLED_SDA=0;
OLED_SCL=1;
OLED_IIC_Delay();
OLED_SDA=1;
}
/*
*********************************************************************************************************
* 函 数 名: IIC_WaitAck
* 功能说明: CPU产生一个时钟,并读取器件的ACK应答信号
* 形 参:无
* 返 回 值: 返回0表示正确应答,1表示无器件响应
*********************************************************************************************************
*/
uint8_t OLED_IIC_WaitAck(void)
{
uint8_t re;
OLED_SDA=1; /* CPU释放SDA总线 */
OLED_IIC_Delay();
OLED_SCL=1; /* CPU驱动SCL = 1, 此时器件会返回ACK应答 */
OLED_IIC_Delay();
if (OLED_IIC_SDA_READ()) /* CPU读取SDA口线状态 */
{
re = 1;
}
else
{
re = 0;
}
OLED_SCL=0;
OLED_IIC_Delay();
return re;
}
//向IIC总线写数据
void OLED_Write_IIC_Byte(uint8_t _ucByte)
{
uint8_t i;
/* 先发送字节的高位bit7 */
for (i = 0; i < 8; i++)
{
if (_ucByte & 0x80)
{
OLED_SDA=1;
}
else
{
OLED_SDA=0;
}
OLED_IIC_Delay();
OLED_SCL=1;
OLED_IIC_Delay();
OLED_SCL=0;
if (i == 7)
{
OLED_SDA=1; // 释放总线
}
_ucByte <<= 1; /* 左移一个bit */
OLED_IIC_Delay();
}
}
//写命令
void OLED_Write_IIC_Command(u8 IIC_Command)
{
OLED_IIC_Start();
OLED_Write_IIC_Byte(OLED_ADDRESS);//OLED地址
OLED_IIC_WaitAck();
OLED_Write_IIC_Byte(0x00);//寄存器地址
OLED_IIC_WaitAck();
OLED_Write_IIC_Byte(IIC_Command);
OLED_IIC_WaitAck();
OLED_IIC_Stop();
}
//写数据
void OLED_Write_IIC_Data(u8 IIC_Data)
{
OLED_IIC_Start();
OLED_Write_IIC_Byte(OLED_ADDRESS);//OLED地址
OLED_IIC_WaitAck();
OLED_Write_IIC_Byte(0x40);//寄存器地址
OLED_IIC_WaitAck();
OLED_Write_IIC_Byte(IIC_Data);
OLED_IIC_WaitAck();
OLED_IIC_Stop();
}
//OLED全屏填充
void OLED_Fill(u8 fill_Data)
{
u8 m,n;
for(m=0;m<8;m++)
{
OLED_Write_IIC_Command(0xb0+m); //page0-page1
OLED_Write_IIC_Command(0x00); //low column start address
OLED_Write_IIC_Command(0x10); //high column start address
for(n=0;n<130;n++)
{
OLED_Write_IIC_Data(fill_Data);
}
}
}
//设置起始点坐标
void OLED_Set_Pos(u8 x, u8 y)
{
OLED_Write_IIC_Command(0xb0+y);
OLED_Write_IIC_Command((((x+2)&0xf0)>>4)|0x10);
OLED_Write_IIC_Command(((x+2)&0x0f)|0x01);
}
//将OLED从休眠中唤醒
void OLED_ON(void)
{
OLED_Write_IIC_Command(0X8D); //设置电荷泵
OLED_Write_IIC_Command(0X14); //开启电荷泵
OLED_Write_IIC_Command(0XAF); //OLED唤醒
}
//让OLED休眠 -- 休眠模式下,OLED功耗不到10uA
void OLED_OFF(void)
{
OLED_Write_IIC_Command(0X8D); //设置电荷泵
OLED_Write_IIC_Command(0X10); //关闭电荷泵
OLED_Write_IIC_Command(0XAE); //OLED休眠
}
//清屏
void OLED_Clear(void)
{
OLED_Fill(0x00);
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
void OLED_ShowChar(u8 x, u8 y, u8 chr)
{
u8 c = 0, i = 0;
c = chr - ' '; //得到偏移后的值
if(x > 130 - 1)
{
x = 0;
y = y + 2;
}
OLED_Set_Pos(x, y);
for(i = 0; i < 8; i++)
OLED_Write_IIC_Data(zf[c * 16 + i]);
OLED_Set_Pos(x, y + 1);
for(i = 0; i < 8; i++)
OLED_Write_IIC_Data(zf[c * 16 + i + 8]);
}
//m^n函数
u32 oled_pow(u8 m, u8 n)
{
u32 result = 1;
while(n--)result *= m;
return result;
}
//显示个数字
//x,y :起点坐标
//len :数字的位数
//num:数值(0~4294967295);
//mode: 为1:显示0 为0:显示空格
void OLED_ShowNum(u8 x, u8 y, u32 num, u8 len,u8 mode)
{
u8 t, temp;
for(t = 0; t < len; t++)
{
temp = (num / oled_pow(10, len - t - 1)) % 10;
if(temp == 0)
{
if(mode)
OLED_ShowChar(x + 8*t, y, '0');
else
OLED_ShowChar(x + 8*t, y, ' ');
continue;
}
else
OLED_ShowChar(x + 8*t, y, temp + '0');
}
}
//显示中英文字符
void OLED_ShowCH(u8 x, u8 y,u8 *chs)
{
u32 i=0;
u32 j;
char* m;
while (*chs != '\0')
{
if (*chs > 0xa0) //汉字内码都是大于0xa0
{
for (i=0 ;i < HZ;i++)
{
if(x>112)
{
x=0;
y=y+2;
}
if ((*chs == hz_index[i*2]) && (*(chs+1) == hz_index[i*2+1]))
{
OLED_Set_Pos(x, y);
for(j=0;j<16;j++)
OLED_Write_IIC_Data(hz[i*32+j]);
OLED_Set_Pos(x,y+1);
for(j=0;j<16;j++)
OLED_Write_IIC_Data(hz[i*32+j+16]);
x +=16;
break;
}
}
chs+=2;
}
else
{
if(x>122)
{
x=0;
y=y+2;
}
m=strchr(zf_index,*chs);
if (m!=NULL)
{
OLED_Set_Pos(x, y);
for(j = 0; j < 8; j++)
OLED_Write_IIC_Data(zf[((u8)*m-' ') * 16 + j]);
OLED_Set_Pos(x, y + 1);
for(j = 0; j < 8; j++)
OLED_Write_IIC_Data(zf[((u8)*m-' ') * 16 + j + 8]);
x += 8;
}
chs++;
}
}
}
void OLED_ShowStr6x8(char x,char y, char ch[])
{ char TextSize=1;
char c = 0,i = 0,j = 0;
switch(TextSize)
{
case 1:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 126)
{
x = 0;
y++;
}
OLED_Set_Pos(x,y);
for(i=0;i<6;i++)
OLED_Write_IIC_Data(F6x8[c][i]);
x += 6;
j++;
}
}break;
}
}
//初始化SSD1306
void OLED_Init(void)
{
HZ= GB16_NUM();
OLED_IIC_GPIO_Config();
OLED_Write_IIC_Command(0xAE); //--display off
OLED_Write_IIC_Command(0x00); //---set low column address
OLED_Write_IIC_Command(0x10); //---set high column address
OLED_Write_IIC_Command(0x40); //--set start line address
OLED_Write_IIC_Command(0xB0); //--set page address
OLED_Write_IIC_Command(0x81); // contract control
OLED_Write_IIC_Command(0xFF); //--128
OLED_Write_IIC_Command(0xA1); //set segment remap
OLED_Write_IIC_Command(0xA6); //--normal / reverse
OLED_Write_IIC_Command(0xA8); //--set multiplex ratio(1 to 64)
OLED_Write_IIC_Command(0x3F); //--1/32 duty
OLED_Write_IIC_Command(0xC8); //Com scan direction
OLED_Write_IIC_Command(0xD3); //-set display offset
OLED_Write_IIC_Command(0x00); //
OLED_Write_IIC_Command(0xD5); //set osc division
OLED_Write_IIC_Command(0x80); //
OLED_Write_IIC_Command(0xD8); //set area color mode off
OLED_Write_IIC_Command(0x05); //
OLED_Write_IIC_Command(0xD9); //Set Pre-Charge Period
OLED_Write_IIC_Command(0xF1); //
OLED_Write_IIC_Command(0xDA); //set com pin configuartion
OLED_Write_IIC_Command(0x12); //
OLED_Write_IIC_Command(0xDB); //set Vcomh
OLED_Write_IIC_Command(0x30); //
OLED_Write_IIC_Command(0x8D); //set charge pump enable
OLED_Write_IIC_Command(0x14); //
OLED_Write_IIC_Command(0xAF); //--turn on oled panel
}
// x0,y0 -- 起始点坐标(x0:0~127, y0:0~7); x1,y1 -- 起点对角线(结束点)的坐标(x1:1~128,y1:1~8)
void OLED_DrawBMP(u8 x0,u8 y0,u8 x1,u8 y1,u8 BMP[])
{
u16 j=0;
u8 x,y;
if(y1%8==0)
y = y1/8;
else
y = y1/8 + 1;
for(y=y0;y<y1;y++)
{
OLED_Set_Pos(x0,y);
for(x=x0;x<x1;x++)
{
OLED_Write_IIC_Data(BMP[j++]);
}
}
}